package nautilus.moneykeeper.utilities;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class ImageUtility {
	public static Bitmap decodeSampledBitmapFromUri(String path, int reqWidth, int reqHeight) {
	     Bitmap bm = null;
	     
	     // First decode with inJustDecodeBounds=true to check dimensions
	     final BitmapFactory.Options options = new BitmapFactory.Options();
	     options.inJustDecodeBounds = true;
	     BitmapFactory.decodeFile(path, options);
	     
	     // Calculate inSampleSize
	     options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
	     
	     // Decode bitmap with inSampleSize set
	     options.inJustDecodeBounds = false;
	     bm = BitmapFactory.decodeFile(path, options); 
	     
	     return bm;  
	    }
	
	public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
		// Raw height and width of image
		final int height = options.outHeight;
		final int width = options.outWidth;
		int inSampleSize = 1;
		        
		if (height > reqHeight || width > reqWidth) {
			if (width > height) {
				inSampleSize = Math.round((float)height / (float)reqHeight);   
		    } else {
		    	inSampleSize = Math.round((float)width / (float)reqWidth);   
		    }   
		}
		return inSampleSize;
	}
}
